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Q.
The correct trend of acidic nature of the following alkynes is
Hydrocarbons
Solution:
As stability of conjugate base is more, greater is the acidic strength Stability of conjugate base
$CH \equiv C ^{-}>\underset{(+ I )}{ CH _{3}}- C \equiv C ^{-}> CH _{3}- C \equiv C - CH _{2}^{\ominus}$
Hence, also terminal $C$ is $sp ^{3}$ hybridize so ability to donates $H ^{+}$is very less. Acidic strength order
$CH \equiv CH > CH _{3}- C \equiv CH > CH _{3}- C \equiv C - CH _{3}$